Spectral analysis of electromyogram in lumbar muscles: fatigue induced endurance contraction

T. Tsuboi, T. Satou, K. Egawa, Y. Izumi, Masami Miyazaki

    Research output: Contribution to journalArticle

    61 Citations (Scopus)

    Abstract

    In the last few years, epidemiological studies have shown correlations between the low endurance capacity of the erector spinae muscle and low back pain (LBP). In this study, the function of the erector spinae muscle and localized muscle fatigue in LBP were investigated in both LBP patients and control subjects without LBP, using surface multi-channel electromyograms (EMG). Four positions (L1, L2, L4, L5) were chosen as representative locations for the different functions of the erector spinae muscle. Median frequency (fm) parameters of an EMG power density spectrum were monitored to quantify localized muscle fatigue. This research indicated a statistically significant difference (P < 0.05) in fm, parameters between the LBP patients and the control subjects. The integrated electromyogram (iEMG) signals of LBP patients were considerably higher than for the control subjects during endurance isometric contraction. Our research suggested that human fatiguing erector spinae muscle, in submaximal voluntary contractions tests, induced a different firing order of motor unit spikes between two groups.

    Original languageEnglish
    Pages (from-to)361-366
    Number of pages6
    JournalEuropean Journal of Applied Physiology and Occupational Physiology
    Volume69
    Issue number4
    DOIs
    Publication statusPublished - 1994 Oct 1

    Fingerprint

    Muscle Fatigue
    Electromyography
    Low Back Pain
    Muscles
    Isometric Contraction
    Research
    Epidemiologic Studies

    Keywords

    • Electromyogram
    • Localized muscle fatigue
    • Low back pain
    • Median frequency

    ASJC Scopus subject areas

    • Physiology
    • Public Health, Environmental and Occupational Health

    Cite this

    Spectral analysis of electromyogram in lumbar muscles : fatigue induced endurance contraction. / Tsuboi, T.; Satou, T.; Egawa, K.; Izumi, Y.; Miyazaki, Masami.

    In: European Journal of Applied Physiology and Occupational Physiology, Vol. 69, No. 4, 01.10.1994, p. 361-366.

    Research output: Contribution to journalArticle

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